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| author | Michael Ellerman <mpe@ellerman.id.au> | 2022-06-28 00:02:30 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-07-25 12:05:15 +1000 |
| commit | 8f2e02394dc907f5e0140bfab80a9aa11e3449ed (patch) | |
| tree | 6bb0545de024586196fa046e612ebda4014a55c7 /tools/testing/selftests/powerpc | |
| parent | 3c20a1d07c377d7260ca853e216cc85bbd7857fa (diff) | |
| download | linux-8f2e02394dc907f5e0140bfab80a9aa11e3449ed.tar.bz2 | |
selftests/powerpc: Don't save CR by default in asm helpers
Thare are some asm helpers for creating/popping stack frames in
basic_asm.h. They always save/restore CR, but none of the selftests
tests touch non-volatile CR fields, so it's unnecessary to save them by
default.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220627140239.2464900-4-mpe@ellerman.id.au
Diffstat (limited to 'tools/testing/selftests/powerpc')
| -rw-r--r-- | tools/testing/selftests/powerpc/include/basic_asm.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/tools/testing/selftests/powerpc/include/basic_asm.h b/tools/testing/selftests/powerpc/include/basic_asm.h index 807e83e821ec..faec7b11c041 100644 --- a/tools/testing/selftests/powerpc/include/basic_asm.h +++ b/tools/testing/selftests/powerpc/include/basic_asm.h @@ -59,14 +59,10 @@ mflr r0; \ std r0, STACK_FRAME_LR_POS(%r1); \ stdu %r1, -(((_extra + 15) & ~15) + STACK_FRAME_MIN_SIZE)(%r1); \ - mfcr r0; \ - stw r0, STACK_FRAME_CR_POS(%r1); \ std %r2, STACK_FRAME_TOC_POS(%r1); #define POP_BASIC_STACK(_extra) \ ld %r2, STACK_FRAME_TOC_POS(%r1); \ - lwz r0, STACK_FRAME_CR_POS(%r1); \ - mtcr r0; \ addi %r1, %r1, (((_extra + 15) & ~15) + STACK_FRAME_MIN_SIZE); \ ld r0, STACK_FRAME_LR_POS(%r1); \ mtlr r0; |